[Solved] How to group and add their value in array of objects in javascript?

by


Use Array reduce()

var result = res.reduce((accu, obj) => {
       accu[obj.url] = (accu[obj.url] || 0) + obj.views;
       return accu;
    },
    {}
);

Output from node CLI:

> var result = res.reduce((accu, obj) => { accu[obj.url] = (accu[obj.url] || 0) + obj.views; return accu; }, {});
undefined
> result
{ '/page1': 16, '/page2': 5, '/page3': 29 }

solved How to group and add their value in array of objects in javascript?